How will semantic web affect the web/mobile widgets?
The real benefits of semantic web are in the backend of managing data on the web rather than any front-end consumer semantic web apps. The real effect for mobile devices may be the systems that can interpret natural language requests for searches and use context such as location to imply meaning. With the exception of location awareness, a mobile semantic web client will be no different than a desktop semantic web client in the way that it uses semantic web data.